DTC Confirmation Procedure

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If DTC confirmation procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

NOTE: For best results, perform at ambient temperature of 14°F (-10°C) or higher. For best results, perform at engine coolant temperature of 14°F (-10°C) to 140°F (60°C).

Replace thermostat with a new one. Use only a genuine NISSAN thermostat as a replacement. If an incorrect thermostat is used, the MIL may come on.
Turn ignition switch ON.
Select "COOLAN TEMP/S" in "DATA MONITOR" mode.
Check that the "COOLAN TEMP/S" is above 140°F (60°C). If it is below 140°F (60°C), go to next step. If it is above 140°F (60°C), stop engine and cool down the engine to less than 140°F (60°C), then retry from step 1.
Drive vehicle for 10 consecutive minutes under the following conditions:
- VHCL SPEED SE
  
  50-75 MPH (80-120 km/h).
If 1st trip DTC is detected, see DIAGNOSTIC PROCEDURE .